Transcript Copy the following numbers onto five index cards. Write the

Mathe-magic
Card Trick
Copy the following
numbers onto five index
cards. Write the numbers
exactly as shown here:
Card 1
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
Card 2
2
3
6
7
10
11
14
15
18
19
22
23
26
27
30
31
Card 3
4
5
6
7
12
13
14
15
20
21
22
23
28
29
30
31
Card 4
8
9
10
11
12
13
14
15
24
25
26
27
28
29
30
31
Card 5
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
What to do:

Ask your friend to secretly think of a
number from 1-31.
 Give them the index cards and ask them
to hand you each card that has their
secret number on it.
 As you get each card, check out the
number in the top left-hand corner.
 Add them all up, the sum will be the
secret number.
 Reveal your “guess”.